人参二醇组皂苷提取物对再生障碍性贫血小鼠免疫调节作用的研究  

Effects of PDS-C on immunoregulation in mice with aplastic anemia

作　　者：郑智茵[1] 尹利明[1] 庄海峰[1] 成志[2] 赵燕娜[1] 余潇苓[1] 高瑞兰[1] 

机构地区：[1]浙江中医药大学附属第一医院血液病研究所,浙江杭州310006 [2]浙江中医药大学附属第二医院,浙江杭州310005

出　　处：《中国药理学通报》2015年第6期790-795,共6页Chinese Pharmacological Bulletin

基　　金：国家自然科学基金资助项目(No 81373876);浙江省科技计划项目(No 2010C33098)

摘　　要：目的观察自行提取分离的中药新药人参二醇组皂苷提取物(PDS-C)对再生障碍性贫血(再障)小鼠促进造血和调节免疫的作用。方法 BALB/c小鼠经亚致死量照射后输入DBA/2小鼠的淋巴细胞,制成免疫介导型再障模型。实验分6组,正常小鼠、模型组、PDS-C低、中和高剂量治疗组及环孢素阳性药物对照组,均灌胃给药15 d。检测外周血象、骨髓病理检查造血组织增生状况、脾脏T细胞亚群比例,及T细胞分化相关T-bet、GATA-3和FOXP3转录调控蛋白的表达水平。结果 PDS-C治疗再障小鼠的疗效明显,中、高剂量组的外周血红蛋白、白细胞和血小板计数均明显高于模型组,骨髓造血组织增生状况也明显优于模型组。PDS-C升高Th2细胞和调节性T细胞(Treg)的比例,降低Th1细胞比例,并上调GATA-3和FOXP3蛋白及下调T-bet蛋白的表达。结论 PDS-C有效地促进造血,改善再障的骨髓抑制,加快造血功能恢复而升高外周血象;同时通过恢复再障小鼠失衡的Th1/Th2/Treg细胞比例而参与调节免疫,该文为PDS-C的临床应用提供实验依据。Aim To observe the effects of panaxdiol saponins component （ PDS-C） extracted and isolated from Chinese ginseng herb as new Chinese patent med-icine on the promotion of hematopoiesis and the regula-tion of the immune system in treating mice models with aplastic anemia （ AA ） . Methods For preparation of immune mediated AA models, BALB/c mice were ex-posed to sublethal doses of 5. 0 Gy γ radiation, fol-lowed by transplanted lymphocytes from DBA/2 donor mice. The mice models were divided into six groups in-cluding normal control, AA model, PDS-C treated groups with lower, medium and higher dosages, cy-closporine （ CsA） as positive drug control. Both PDS-C and CsA were administered by gastrogavage for 15 days. The peripheral blood cells counts and bone mar-row pathological examination were tested, the percenta-ges of Th1/Th2/Treg cells from spleen were measured, the protein expression levels of T-bet, GATA-3 and FOXP3 transcription factors in spleen cells were detec-ted. Results Curative effect of PDS-C on treating AA mice was satisfactory. The peripheral hemoglobin, white blood cells and platelet counts in PDS-C groups with medium and higher doses were significantly higher than those in model control. Meanwhile, PDS-C ele-vated the percentages of Th2 cells and Treg cells, but decreased the percentage of Th1 cells, as well as up-regulated the GATA-3 , FOXP3 and down-regulated the T-bet protein levels. Conclusion PDS-C possesses the activities of promoting hematopoiesis obviously. It can improve marrow myelosuppression, enhance the re-covery of hematopoiestic function, and elevate the pe-ripheral blood cells counts. PDS-C also pays its immu-noregulatory efficacy though recovering from unbal-anced Th1/Th2/Treg cells in treating immune media-ted AA mice.

关 键 词：人参二醇组皂苷 再生障碍性贫血 免疫调节 T细胞亚群 小鼠 实验研究 

分 类 号：R-332[医药卫生] R284.1